Method of web renewing



Aug. 1, 1939. I A. H. MAC KLEY 2,167,810

METHOD OF WEB RENEWING Filed March 29, 1957 Wig. Z3

BYWS i W firm/wax Patented Aug. 1, 1939 UNITED STATES PATENT OFFICE Application March 29,

1937, Serial No. 133,747

In Great Britain March 31, 1936 4 Claims.

This invention relates to web renewing'apparatus. When a web roll of a printing press is nearly exhausted, it is customary to attach the extremity of a fresh web roll to the moving web of the nearly exhausted roll by applying glue to said extremity, rotating said roll with its peripheral speed equal to that of the moving web, and, at the correct moment, bringing the rotating roll into contact with the moving web so that the glued extremity of said roll will adhere to said web and be carried along therewith.

To maintain the extremity of the new roll firmly against the next turn of the roll while said roll is rotating and at the same time permitting it to be paid out immediately it is aiiixed to the old web, it is customary to use a gummed paper tab which is adapted to fracture when the extremity of the new roll begins to be paid out.

Difficulty has been heretofore experienced in that some of the glue which is applied to the extremity of the new roll may inadvertently get onto the adjacent turn of said new roll with the result that not only the extremity but also the adjacent turn will adhere to the old web.

The invention has for its object the provision of simple means for overcoming this difiiculty, and, in accordance with the invention, the paper tab which is employed to maintain the extremity of the new roll against the adjacent turn of said new roll, is provided with an opening in it which, when the tab is in place, exposes a considerable area of the extremity of the new roll but does not expose any part of the said adjacent turn. The glue by which the extremity of the new roll is adapted to be attached to the old web is then applied to said extremity through said opening and said tab serves to shield the said adjacent turn from the glue.

In the accompanying drawing, like characters of reference indicate like parts in the several views and Figure 1 is a view of a roll of paper or the like, having one end provided with one form of tab suitable for the purposes of this invention;

Figure 2 is a View similar to Fig. 1 but showing a second form of tab;

Figure 3 is an enlarged detailed plan view showing the first form of tab;

Figure 4 is a view similar to Fig. 3 showing the second form of tab; and

Figure 5 is a schematic view showing the manner of connecting material from an almost exhausted roll to the outer end of the material of a fresh roll.

In the embodiments of the invention here shown, there is disclosed in Figs 1 and 2, a roll Iii of paper or the like and, in the present instance, the roll is shown as provided with an outer end i I having converging edges l2, so that the outer convolution of the roll terminates in a point l3. Attached to the end of the roll in Fig. 1 is a specially formed tab [4 and similarly in Fig. 2 there is attached a specially formed tab i5. While these tabs may be of any desired form capable of accomplishing the object of the invention, the tab l4 has been here shown as a circular disc wherein is provided an opening Hi. This opening l6 preferably has two sides H which converge at the same angle as the sides l2 of the roll. The remaining periphery of the opening is formed by a pair of converging sides l8 connected by an arcuate side ill. Each side [8 forms a blunt angle with the corresponding sides I! and from this angle in the general direction of the side I! extends a series of herring bone slits 2B, which series terminates at the periphery of the disc forming the tab.

The tab E5 is similarly provided with an opening 2|, the lower sides 22 of which converge preferably at the same angle as the edges l2 oi the roll. At the outer ends of the sides i2, the opening has its periphery formed by substantially semi-circular edges 23 from the upper ends of which extend converging edges 24 connected by an arcuate edge 25. A pair of weakened lines extend between each edge 23 and the periphery of the tab l5 as at 26, these weakened lines extending in the general direction of the respective sides 22 of the opening. In applying the device,

as will be seen from Figs. 1 and 2, the tab is secured to the outer end of the roll Hi in such manner that the extremity of the outer end is exposed through the respective opening H5 or 2|, At the same time, no part of the next inner convolution of the roll is exposed through the tab which thus forms a guard around the exposed extremity of the roll. Thus, the tab not only holds the roll end from unrolling, but affords means whereby adhesive may be applied in the opening without such adhesive reaching a part of the roll other than that exposed through said opening.

In Fig. 5, the new roll is indicated at Illa while an almost exhausted roll is shown at [0b. The run of the material from the roll lilb is indicated at I00 and passes around an idler or guide roll Hid in the direction of the arrow A. The new roll or fresh roll Illa has the part exposed through the opening of the tab provided with an adhesive and brought into contact with the material I00 so that it adheres thereto, as shown by the tab portion |6a in Fig. 5. The roll Na, in its revolution in the direction of the arrow B, extends away from the material I00 below its tangent point. As it revolves, stress is set up between the lower part lBb of the tab and the upper part so that the tab tears along the weakened lines. By this means, the outer end of the fresh roll is connected to the nearly exhausted roll adjacent its inner end.

What I claim and desire to secure by Letters Patent is:

1. A method of securing the extremity of a new web to a moving web which is nearly exhausted, which comprises gumming a tab of paper or like material with an opening in it over the extremity of the fresh web so as to fasten it down against the adjacent turn of the roll with the opening exposing a considerable area of the extremity of the weband not exposing the said adjacent turn, applying gum or glue to said extremity through said opening and bringing the glued area into contact with the old web, so that it is carried along thereby, whereupon said tab fractures.

2. A method of securing the extremity of a new web to a moving web which is nearly exhausted, which comprises gumming a tab of paper or like material with an opening in it over the extremity of the fresh web with one side of the opening substantially coinciding with the edge of the extremity of the roll so that said extremity is fastened down against the adjacent turn of the roll with the opening exposing a considerable area of the extremity of the web and not exposing the said adjacent turn, applying gum or glue to said extremity through said opening and bringing the glued area into contact with the old web, so that it is carried along thereby, whereupon said tab fractures.

3. A method of securing the extremity of a new web to a moving web which is nearly exhausted, which comprises gumming a tab of paper or like material with an opening in it, and provided with weakened lines, over the extremity of the fresh web so as to fasten said extremity down against the adjacent turn of the roll with the opening exposing a considerable area of the extremity of the web and not exposing the said adjacent turn, applying gum or glue to said extremity through said opening and bringing the glued area into contact with the old web, so that it is carried along thereby, whereupon said tab fractures along said weakened lines.

4. A method of securing the extremity of a new web to a moving web which is nearly exhausted, which comprises gumming a tab of paper or like material with an opening in it, and provided with weakened lines, over the extremity of said fresh web with one side of the opening and with the weakened lines substantially coinciding with the edge of the extremity of said web so that said extremity is fastened down against the adjacent turn of the roll with the opening exposing a considerable area of said extremity and not exposing the said adjacent turn, applying gum or glue to said extremity through said opening and bringing the glued area into contact with the old web, so that it is carried along thereby whereupon said tab fractures along said weakened lines.

ALFRED HENRY MACKLEY. 

